Yamaha YFM660FS, Supplementary Service Manual

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SPEC
CHASSIS
ELECTRICAL
Item Standard Limit
Front suspension:
Shock absorber travel 86 mm (3.39 in) ----
Fork spring free length 296.5 mm (11.67 in) 290.6 mm
(11.44 in)
Spring fitting length 237 mm (9.33 in) ----
Spring rate (K1) 20 N/mm
(2.04 kg/mm, 114.2 lb/in) ----
Stroke (K1) 0 ~ 86 mm (0 ~ 3.39 in) ----
Optional spring No ----
Rear suspension:
Shock absorber travel 95 mm (3.74 in) ----
Spring free length 278.5 mm (10.96 in) ----
Spring fitting length 237 mm (9.33 in) ----
Spring rate (K1) 36.4 N/mm
(3.71 kg/mm, 207.84 lb/in) ----
Stroke (K1) 0 ~ 95 mm (0 ~ 3.74 in) ----
Optional spring No ----
Item Standard Limit
C.D.I.:
Magneto model/manufacturer F4T469/MITSUBISHI ----
Pickup coil resistance/color 459 ~ 561
Ω
at 20 °C (68 °F)/
White/Red – White/Green
----
Rotor rotation direction sensing coil resis-
tance/color 0.063 ~ 0.077
Ω
at 20 °C (68 °F)/
Red – White/Blue
----
C.D.I. unit model/manufacturer F8T40372/MITSUBISHI ----
Charging system:
Type A.C. magneto generator ----
Model/manufacturer F4T469/MITSUBISHI ----
Nominal output 14 V 21 A at 5,000 r/min ----
Charging coil resistance/color 0.32 ~ 0.43
Ω
at 20 °C (68 °F)/
White – White
----
MAINTENANCE SPECIFICATIONS